JP3231767B2 - Car parking facilities - Google Patents

Abstract

PCT No. PCT/EP92/02104 Sec. 371 Date Mar. 11, 1994 Sec. 102(e) Date Mar. 11, 1994 PCT Filed Sep. 14, 1992 PCT Pub. No. WO93/06322 PCT Pub. Date Apr. 1, 1993.A reliable motor vehicle parking installation having an economical construction is provided and includes an extremely flexible structure to maximize the available space. Its construction can extend above and/or below the ground. The installation includes a load-bearing structure having at least one tower with multiple cells arranged in superimposed horizontal rows. Each cell has at least one pair of longitudinal horizontal guide members disposed perpendicular to the horizontal rows of cells. A platform moves along a vertical structure, which is itself movable horizontally, parallel to the horizontal rows of cells. The platform has at least one pair of longitudinal members arranged in the same member as the longitudinal member of each cell. Multiple trays are provided each of which includes a pair of vehicle parking runways, and an actuator moves the trays between the platform and the cells of each tower. Each actuator has a double-acting hydraulic cylinder piston unit with an axis parallel to the longitudinal guide members so that a first element of the cylinder piston unit is rigid with the platform and a second element moves relative to the first one stretching towards the cells. The hydraulic cylinder piston unit can be connected to each tray by a device consisting of a member integral with the movable part of a cylinder piston unit and activated only in its utmost elongated position. Each tray can be releasably connected to the corresponding cell.

Description

The present invention relates to a car parking facility.

A load-bearing structure divided into units or "compartments" sized to accommodate the vehicle and transporting the vehicle from an entrance location to any of these compartments or any one at the end of the parking period. BACKGROUND OF THE INVENTION Vehicle parking facilities are known which comprise a transfer device which is movable relative to the structure in order to remove the vehicle from the two compartments and to transfer it in the opposite direction in order to move it to the exit position.

This type of equipment has evolved into many different types of equipment using many operating principles to solve individual technical problems. The problems generally relate to available space, its deployment and handling systems above and / or below the ground, and the like. Some of these facilities are described, for example, in EP-A1-0 214 048, FR-A-1 450 015
No., DE-A1-2-058 404, EP-A2-0 152 789
No., EP-A1-0 041 241 and EP-A2-0 220 594
No., EP-A1-0 351 374, EP-A2-0 143 139
No., EP-A1-0 275 004, WO 86/03246, WO 86
/ 04107, WO 88/08476, WO 89/01557 and WO 90
No./10132, which relates to one of its structural type, its vehicle handling system, its control and safety system, parking management standards and any special technical problems encountered in various specific cases. Many different details are different from each other.

DE-B-1.684.789 discloses that a support platform is provided on a plurality of floors, an elevator is provided for carrying the support platform in and out of said floor, said elevator moving the support platform from the elevator to said floor. The present invention also relates to a storage system for automobiles or other articles provided with driving means for moving the same.

FR-A-1.450.015 describes a parking facility with a plurality of stacked compartments located on both sides of a central passage perpendicular to the direction of introduction of the vehicle into the compartment.

It is a primary object of the present invention to provide a car parking facility which combines a simple and economical structure with extremely high work reliability.

It is another object of the present invention to provide a parking facility having a structure having extremely large flexibility in use space.
With regard to its contour, it can extend above and / or below the ground, with regard to its vehicle arrangement, the vehicles can be placed side by side or side by side, with regard to their entrance and exit positions, which may be common or separate. And can be located at any position relative to the structure according to the relationship between the access path of the facility and the external road.

The above objects and other objects which are apparent from the description of the text are achieved according to the present invention by a motor vehicle parking system according to claim 1.

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

 FIG. 1 is a plan view of a first embodiment of the equipment of the present invention.

 FIG. 2 is a front view on line II-II of FIG.

 FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a detailed plan view of the movable platform and its vertical structure.

 FIG. 5 is a partial side view of the vertical structure.

FIG. 6 is a cross-sectional view of a movable platform on which a tray is placed.

FIG. 7 is an enlarged, partial vertical sectional view of the platform along line VII-VII of FIG.

FIG. 8 is a partial cross-sectional and enlarged detailed view similar to FIG. 6 of the vertical actuator mounted on the tray transfer platform and the member for connecting the tray to the compartment.

 FIG. 9 is a plan view of another embodiment of the equipment of the present invention.

 FIG. 10 is a front view on line XX of FIG.

 FIG. 11 is a plan view of the third embodiment.

 FIG. 12 is a side view on the line XII-XII of FIG.

 FIG. 13 is a plan view of the fourth embodiment.

 FIG. 14 is a side view on the line XIV-XIV of FIG.

As shown, the facility of the present invention is preferably comprised of uprights 4, longitudinal members 8, transverse members 10, and steel sections having dimensions capable of withstanding the maximum expected stress, comprising the installable bracing. It has a load support structure. These sections are joined by bolting or welding.

For simplicity, one particular configuration of this structure with two identical towers, indicated generally at 2, 2 ', will be described in detail. The towers face each other and are separated by a distance suitable for passing the vehicle 14 transport platform 12. The two towers have a parallelepiped shape,
It has various structural parts arranged to define several horizontal overlapping rows of compartments 16, each row for accommodating a car 14 side by side with a car contained in another compartment. Prepare.

In the embodiment described in detail, the entry location 16 'is provided in the lower row end compartment of one tower 2 and the exit location 1
6 "is provided in the opposite end compartment of the lower row of the other tower 2 '.

The two base cross members 10 of each compartment 16, 16 ', 16 "
One vertical guide member, two outer members 6 and two inner members 6 'are supported. These are parallel to the vertical member 8 of the load supporting structure. The purpose of the longitudinal members 6, 6 'is to support and guide a tray 18 for supporting and receiving the vehicle 14. The tray 18 comprises two tracks 20 and a plate 22 connecting them.

Each runway 20 is made of an upwardly open C-shaped metal plate section, welded to the underside of the runway and has a bearing 26 for rolling on the lower flange of the corresponding longitudinal guide member 6, 6 'of the tower 2, 2'. It is supported by a plurality of small transverse members 24 provided at the ends. The end of the cross member 24 is provided with a vertical axis bearing 26 'which bears against the vertical web of the vertical member 6, 6' for guiding the tray 18 laterally.

Each track 20 has a pair of small double-inclined slopes,
The slopes are naturally spaced a distance greater than the maximum wheelbase designed for the vehicle 14, ensuring that all vehicles have their wheels on the runway 20 inside the slopes 28 when parking. The slope thus forms a stop for the vehicle, even if the vehicle is not in a braked state.

The two slopes 28 are fixed to the floor of each runway 20,
In an embodiment not shown, they can be adjusted vertically with respect to the runway, so that they can also be adapted to specially sized vehicle wheelbases.

The ramp 28 is preferably mechanically adjusted by a known system controlled by a reader that reads the outline of the vehicle 14 and then adjusts the vehicle position so that the vehicle does not protrude beyond the tray 18. Can be made.

At a central position below the plate 22 connecting the two tracks 20, there are provided two parallel attachment members 30 which are welded to the plate and face downward. The two attachments have parallel vertical surfaces, each vertical surface having a hole 32 coaxially arranged with a hole in the other surface. Their inner surface, ie the surface facing the other accessory, has a chamfered vertical edge.

The two internal longitudinal guide members 6 'of each compartment 16 are connected to each other at the center by a transverse member 34. A member 38 for holding the corresponding tray 18 is fixed to the central portion by a bracket 36. The holding member 38 is composed of a cylinder arranged in parallel with the supporting cross member 34 and accommodates therein two pins 40 which are held so as to protrude from two opposite cylinder ends by a coil spring 42 inserted therebetween. . Each of the two pins 40 has a rack accessory 44 within the cylindrical chamber 38 that engages a single gear 46. The gear ensures that the two pins are simultaneously moved in opposite directions. The reason will be described later. The dimensions of the retaining member 38 are such that when the two pins 40 are fully contained within the cylinder containing them,
All units are between the two attachments 30, but when the two pins protrude from the cylinder, they are:
When the tray 18 is centered on the vertical guide members 6, 6 ', it is adapted to engage two holes 32 in the accessory member 30.

A centering member consisting of a plate 48 with a widened hole 50 is welded to the lower flange of each internal longitudinal guide 6 'at the end facing the opposite tower.

As mentioned above, another essential element of the present invention is the automotive
A platform 12 for dealing with 14. The platform is supported by a vertical structure 52 located between two towers 2, 2 'and is movable along the space defined by the towers.

Furthermore, the vertical structure 52 comprises two vertical uprights 54 with a lifting carriage 55 at the upper end, the carriage sliding along a vertical guide rail 56 supported by a beam 57. The beam interconnects the two towers and supports them, if provided with a roof. In the lower part, the lower guide rails on the floor of the corridor defined by the two towers 2, 2 '
A rail 59 is provided, which is provided with a rack 60 for engaging a gear 61 connected to the shaft of an electric motor 62 for moving the vertical structure 52 along the rails 56,59.

Two vertical uprights at the same height as the two towers 2, 2 '
Along 54, the beam slides through its two ends,
The beam has four longitudinal members of the same shape, size and arrangement with respect to the four longitudinal guide members 6, 6 'of each compartment 16.
64 and 64 'are fixed.

Each upright 54 of the vertical structure 52 has a hydraulic cylinder.
A piston unit 66 is attached, and a rod of the unit is provided.
68 extends upwards, with sprockets 70 at its ends,
A chain 72 loops around this sprocket. The chain is fixed at one end to the associated upright 54 and at the other end to the beam 63. This beam slides along the uprights 54 and
When the two cylinder-piston units extend synchronously over a distance, they move the beam 63 vertically over twice that distance.

Two double-acting cylinder-piston units 74, 74 'are associated with two internal longitudinal guide members 64' supported by beams 63. Each cylinder-piston unit 74, 74 'comprises a cylinder 76, 76' substantially equal to the length of the longitudinal member 64 ', a rod 78, 78' sliding along said cylinder 76, 76 ', an outer jacket 80, 80'. And two connectors for entering and exiting the working fluid, said jacket extending said cylinder longitudinally except for a narrow longitudinal slit for passing a bracket 81 to secure the cylinder 76 to the longitudinal member 64 '. Completely in the direction and almost completely in the circumferential direction. The ends of the rods 78, 78 'emanating from the respective cylinders 76, 76' are fixed to end pieces 82 connected to the outer jackets 80, 80 '. Two cylinder-piston units 74, 74 '
Are arranged in opposite directions such that the respective rods 78, 78 'extend in opposite directions.

A carriage 84 with bearings for supporting and guiding along the upper flange of the associated longitudinal member 64 'is several longitudinally spaced apart on the outer jacket 80, 80' of each cylinder-piston unit 74, 74 '. It is fixed at the place where it was done. Its purpose is to support the rods 78, 78 'when pulled out of the cylinders 76, 76' and to keep their axes substantially straight despite their considerable length. Small cylinder-piston units 86, 86 'have the same outer jacket
80, 80 'each horizontally, that is, the axis is
It is fixed at right angles to the axes of the piston units 74, 74 '.

The diameter of the rods 88, 88 'of these lateral cylinder-piston units 86, 86' is such that when they are in the extended position, they can be externally engaged with the corresponding attachments 30 of the tray 18. I do.

At each end of each internal longitudinal guide member 64 ', another cylinder-piston unit 90 is provided, the rod 92 of which, as will be described later, is provided in the compartment 16 in which the platform 12 is to be located.
The vertical members 6, 6 'and the vertical members 64, 64' have a diameter such that they fit into holes 50 provided in the centering plate 48 for complete alignment.

The equipment of the present invention is equipped with a plurality of control devices, limit switches and various automatic devices for accurately executing the operation cycle. Preferably all these components, controlled by the microprocessor, are of the conventional type,
Further description is omitted.

To better understand the facility of the present invention, one compartment 14 contains a car 14 placed on a tray 18 and another compartment 16 contains an empty, i.e., tray without a car. Consider the state as the initial state. The total number of platforms is N-
2 where N is the number of compartments 16 and each tray 18 with or without the automobile 14 is
Supported on two runways 20. The horizontal member is a vertical member 6,
6 'and is firmly connected to the respective compartment by a hook between the two pins 40 of the holding member 38 and the two attachment members 30 of the tray 18.

The control computer controls the degree of occupancy of the various compartments 16, i.e. whether the individual compartments are open or occupied, and handles the vehicle 14 and e.g. before the entrance position 16 ', i.e. at the entrance. Know the position of the platform 12 which can be between the position 16 'and the outlet position 16 ". For further simplicity, an empty tray 18 is already in the inlet compartment 16', and FIG. It should be noted that both the parking compartment and the exit compartment for the car 14 shown in dashed lines have no tray 18.

If, under these conditions, the vehicle 14 arrives in front of the barrier 93 allowing access to the entry location 16 ', a conventional automatic dispenser will replace the magnetic card with the arrival data and data relating to that particular customer. Distribute.

Upon removal of the card from the dispenser, the parier 93 operates in a normal manner so that the vehicle 14 is free to pass through two ramps and into the entrance compartment 16 '. At this point, the vehicle 14 has four wheels on two runways 20 in four small slopes 28. As described above, the slope functions as a stop element of the vehicle even if the driver forgets to apply the parking brake.

When the driver leaves the car, he inserts the magnetic card into the reader. The reader reads the recorded data and sends them to the control computer for use with the data it has already processed, and in particular with regard to the location of the destination compartment.

The transfer phase begins with the command to extend the rods 92 of all four centering cylinder-piston units 90, and the four longitudinal members 64, 64 'of the platform 12 and the four of said compartments.
In order to obtain a perfect alignment between the two longitudinal members 6, 6 ', the unit is fitted with holes 50 in opposing plates 48 fixed to the longitudinal guide members 6' of the inlet compartment 16 'and the outlet compartment 16 ". Get involved.

Upon completion of this operation, oil is supplied to a vertical cylinder-piston unit 74 from which rod 78 and associated jacket 80 extend toward inlet compartment 16 '.

The stroke end position of the cylinder-piston unit 74 is such that the associated lateral cylinder-piston unit 86 is aligned with the retaining member 38 for the tray 18 in the inlet compartment 16 ', i.e., the lateral cylinder-piston unit 86 is fixed to the tray. This corresponds to a position facing one of the two attached members 30. At this point, another automatic command causes the rod 88 of the lateral cylinder-piston unit 86 to extend, enter the hole 32 of the accessory member 30 and push the opposing pin 40 into the retaining member 38. Due to the toothed joint between the two pins 40 of the holding member, when one reenters the cylindrical casing, it also reenters the other at the same time, so that the two attachments 30 disengage.
Therefore, in practice, the cylinder-piston unit of the tower
Activating 86 allows the tray 18 to be held in the entry compartment
It is transferred from the holding member 38 fixed to 16 ′ to the vertical cylinder-piston unit 74 fixed to the platform 12. Following a subsequent opposite command, the cylinder-piston unit 74 draws the rod 78 into the cylinder 76 and
Is transported with the automobile 14 resting thereon. This operation involves bearings 26, 6 along the longitudinal members 6, 6 'of the inlet compartment 16' and then along the longitudinal members 64, 64 'of the movable platform.
This is done by rolling 26 '. As soon as the tray 18 begins to move towards the movable platform 12 and its attachment 30 has moved from a position facing the holding member 38,
It should be noted that the two pins 40 are returned to the outwardly projecting state by the elastic reaction of the spring 42 contained in the holding member.

When the platform 12 reaches the position supported only by the longitudinal members 64, 64 ', the centering cylinder-piston unit 90 is de-energized, completely releasing the platform from the two compartments 16, 16' and Commands act on the electric motor 62 for moving the vertical structure 52 and the cylinder-piston unit 66 for raising the platform 12 along the vertical structure 52, according to the data available to the control computer. Then, the platform 12 is moved to a position facing the compartment not including the tray 18.

In the figure, this compartment 16 is assumed to be in the tower 2 'opposite the tower containing the entrance compartment 16'. A movable platform arrives at destination compartment 16 and an electric motor 62
And when the cylinder-piston unit 66 is reset,
The command is sent to the centering cylinder-piston unit 90,
The platform 12 is secured in the destination compartment 16 and the facing compartment of the other tower 2 so that the alignment between the corresponding longitudinal members 64, 64 'and 6, 6' is complete.

When the rod 92 of the cylinder-piston unit 90 engages the hole 50 in the two plates 48, the command is sent to the other vertical cylinder-piston unit 74 ', which sends the tray 18 with the car 14 into the destination compartment 16. .

During the final stages of this transfer stroke, the two appendages 30 of the tray 18 collide with the pins 40 that resiliently project from the holding member 38 of the destination compartment, causing them to re-enter the cylindrical casing. Obviously, at the end of this travel, the two pins 40 will remain in their re-entry state, even if the holes 32 in the accessory face them. That is, one hole corresponds to the rod 88 'of the horizontal cylinder-piston unit 86'.
Because it is occupied by. When the rod 88 'is re-entered, the two pins of the holding member 38 which move simultaneously
40 resiliently exits and securely locks tray 18 to destination compartment 16.

Next, the rod of the vertical cylinder-piston unit 74 '
78 'is re-entered, after which the rod 92 of the centering cylinder-piston unit 90 is re-entered to release the movable platform 12 from the just-entered compartment.

At this point, various tasks can be performed in connection with the computer program. However, all of them are included within the scope of the present invention. For example, the mobile platform 12 can pull an empty tray 18 out of another compartment 16 and, when another vehicle arrives, transfer it to an entry location 16 'to repeat the above cycle. . Alternatively, it may be necessary to place another vehicle in another open compartment, or to wait for a request to withdraw the vehicle from the occupied compartment when the parking period has expired. You can also stay in. In this latter case, after confirming that the outlet compartment does not include the tray 18, the above work cycle is repeated in reverse order. Obviously, in order to correctly place the vehicle in the compartment or to remove the vehicle from the compartment, the destination compartment must be tray-less, so the control program must Includes confirming the transfer before ordering it.

As mentioned above, the movable platform comprises two vertical cylinder-piston units 74, 74 ', each of which transports the tray 18 from the platform to one of the two towers 2, 2' or vice versa. A particular embodiment of the equipment of the present invention arranged for transport has been described.
If the installation comprises only one tower, a single cylinder-piston unit 74 is sufficient.

9 to 14 show another embodiment of the present invention. In particular, FIGS. 9 and 10 are similar to the previous embodiment, except that the entry position 16 'coincides with the exit position 16 "and the vehicle 14 is aligned in several compartments 16. The equipment of the configuration is shown.

FIGS. 11 and 12 show an installation having two towers 2, 2 'as in FIG. 1, but partly underground and partly above ground. The entrance position 16 'and the exit position 16 "are intermediate positions, which are aligned at the ground level but not aligned.

Finally, FIGS. 13 and 14 show a configuration with two towers completely underground, the entrance position of which coincides with the exit position.

With respect to the various types shown, it should be recognized that the invention encompasses all combinations obtained by combining the various features.

From the above description, the installation according to the invention is particularly advantageous in the following respects: There is no restriction both on the choice of the contour and on its dimensions, so that any requirements can be met.

Extremely simple structure and very low cost per compartment.

 Extremely quiet.

 Work reliability is extremely high.

 Suitable for virtually complete automation.

Use of an open type or use within a building, or use of a partially open type may result in use within a building.

The upper compartment compartment tray satisfactorily protects each vehicle from atmospheric agents.

Claims (25)

(57) [Claims] 1. A load-bearing structure comprising at least one tower (2, 2 "), said towers comprising a plurality of compartments (16, 16 ', 16") arranged in overlapping horizontal rows. Wherein each compartment comprises at least one pair of longitudinal guide members (6, 6 ') arranged at right angles to a horizontal row of said compartments; and movable along a vertical structure (52). And a platform (12) movable horizontally and parallel to the horizontal rows of said compartments, said platform (12) being a longitudinal member (6) of each compartment (16, 16 ', 16 "). , 6 ') comprising at least one pair of longitudinal members (64, 64') arranged in the same manner as described above; Provision; platform (12) and each tower compartment (16, 16 ',
16 ") with an actuator (74, 74 ') for moving the tray (18) between the trays (18"); and means for coupling said actuator (74, 74') to each tray (18). In one embodiment, each actuator (74, 74 ') comprises a double-acting hydraulic cylinder-piston unit having an axis parallel to said longitudinal guide (6, 6'), said unit comprising a platform (12). And a second element (78, 78 ') movable relative to said first element and extending toward said compartment (16, 16', 16 "). The means for connecting said hydraulic cylinder-piston unit (74, 74 ') to each tray (18) is the movable part (78, 78') of said cylinder-piston unit and its maximum (86, 86 ', 3)
And means (38, 30) assigning each tray (18) to a corresponding compartment (16,
16 ', 16 "), characterized in that said means are deactivated by said members (86, 86', 30) in an activated state. 2. Tower (2, 2 ') facing parallel to one another and separated by a distance suitable for the vertical structure (52) of said platform (12) to pass through. The facility of claim 1. 3. The two towers (2, 2 ') are connected to each other by beams (57) supporting rails (56) for suspending and guiding said vertical structure (52). The facility according to claim 2. 4. The method according to claim 3, wherein the lower guide rail for the vertical structure is arranged at the floor level between the two towers. Facility. 5. The installation according to claim 2, wherein the two guide rails for the vertical structure (52) are arranged at the floor level between the two towers (2, 2 '). 6. A rack (60) attached to one of the lower rails (59) and geared to the shaft of the electric motor (62) to move the vertical structure (52) horizontally. An installation according to claim 4 or 5, characterized in that 61) is engaged with the rack. 7. A structure (52) comprising a pair of uprights (54) along which a platform (12) slides, said platform securing longitudinal members (64, 64 '). The installation according to claim 1, characterized in that it comprises a shaped beam (63). 8. A vertical cylinder-piston unit (66) for raising a beam (63) for each upright (54).
The facility according to claim 7, comprising: 9. A cylinder in which each cylinder-piston unit (66) is fixed to an associated upright (54) and a sprocket (7) extending upwardly from said cylinder and having an end at its end.
A chain (72) having a rod (68) having a first end fixed to the upright and the other end fixed to the beam (63). The equipment according to 8. 10. The platform (12) is connected to each compartment (16,
16 ', 16 "), its vertical members (64, 64')
2. A means (50, 92) for aligning and holding the upper and lower members with a longitudinal member (6, 6 ').
Equipment described in. 11. At least one of the platforms (12)
At least one end of one of the vertical members (64, 64 ')
It has a piston unit (90), and its rod (92)
Holes associated with corresponding longitudinal members (6, 6 ') of the various compartments (16, 16', 16 ") to ensure alignment between said longitudinal members (6, 6 ', 64, 64') 11. The equipment according to claim 10, wherein the equipment can be engaged. 12. The runway (20) of each tray (18) has wheels (26, 26 ') for sliding the trays along said longitudinal members (6, 6', 64, 64 '). The installation according to claim 1, characterized in that a support cross member (24) is provided below. 13. The installation according to claim 1, wherein the two tracks (20) of each tray (18) are joined to one another by a connecting plate (22). 14. Each tray (20) is provided with two double-inclined ramps (28) forming stops for vehicles placed on the tray (18). The facility of claim 1. 15. Installation according to claim 14, characterized in that the two ramps (28) of each runway are adjustable along the associated runway (20). 16. Each ramp (28) is associated with a mechanical actuator for moving along a corresponding runway, said actuator corresponding to an end of a tray (18) near said ramp. 16. The facility of claim 15, wherein the facility is controlled by a placed outline reader. 17. A cylinder-piston unit (86, 86 ') is mounted on a portion of the cylinder-piston unit (74, 74') which is movable relative to the platform (12).
Its axis is at right angles to the axis of the cylinder-piston unit (74, 74 ') and its rod (88, 88') is located at the position where it engages the corresponding member (30) fixed to the tray (18). The equipment according to claim 1, characterized in that it can be moved between positions disengaged from said member (30). 18. Each cylinder-piston unit (74, 7
4 ') is a cylinder (7
6, 76 '), a rod (78, 78') exiting from the end of the cylinder facing the tower (2, 2 ') associated with the cylinder-piston unit, and a longitudinal passage for passing means (81). A jacket (80) surrounding the cylinder in a circumferential direction excluding a slit, said means connecting said cylinder to a platform (12) and fixed to said rod (78, 78 ') at the free end of said cylinder The installation according to claim 5, characterized in that the cylinder-piston unit (86, 86 ') is fixed centrally to the jacket (80, 80'). 19. The platform (12) comprises two parallel cylinder-piston units (7 ', 74'), the rods of which operate on two different towers (2, 2 ') and have two opposite sides. 19. The equipment according to claim 2, wherein the equipment exits from an end of the equipment. 20. Each tray (18) is assigned to a corresponding compartment (16, 1).
6 ', 16 ") means for detachably connecting to the compartment structure comprises a cylinder (38) fixed to the compartment structure, said cylinder comprising a corresponding member (30) fixed to the tray (18).
2. The installation according to claim 1, characterized in that it comprises at least one pin (40) axially movable between a position where it engages with and a position where it is disengaged from the member. 21. The installation according to claim 20, wherein the cylinder (38) is provided with a pair of pins (30) coming out of its two ends. 22. An installation according to claim 21, wherein the means (44, 46) are associated with two pins (30) for movement in opposite directions. 23. Two pins (30) are provided in a cylinder (33) and a rack attachment (44) is provided in said cylinder (38).
Meshes with a single gear (46) housed in the spring (42)
22. A device as claimed in claim 19, wherein the at least one pin is inserted between the two pins to elastically hold them in the extended position.
Equipment described in. 24. Each tray (18) is fitted with two parallel attachments (30), said attachments projecting vertically downwards and provided with two coaxial holes (32), said holes being provided in the tray (18). 18) when the two pins (30) of the holding member (38) are correctly positioned on the compartments (16, 16 ', 16 ")
24. The installation according to claim 17 or 23, characterized in that it is hooked on the rods (88, 88 ') of two cylinder-piston units (86, 86') on opposite sides. 25. The installation according to claim 24, wherein the two inner walls of the two attachments have chamfered vertical edges.